Public finance is the study of the role of the government in the economy. It is the branch of economics that assesses the government revenue and government expenditure of the public authorities and the adjustment of one or the other to achieve desirable effects and avoid undesirable ones. The purview of public finance is considered to be threefold, consisting of governmental effects on: 1. * The efficient allocation of available resources; 2. * The distribution of income among citizens; and 3. * The stability of the economy.